National Weather ServicePuerto RicoSevere Thunderstorm WarningArchive to October 1, 2026
Severe Thunderstorm Warnings in Puerto Rico
The National Weather Service issued 3 severe thunderstorm warnings for Puerto Rico in 2025 and 3 a year on average in 2008-2025; in 2021-2025 it had the 52nd most of any state. 2026 through September: 0, 100% below the average of 2 for those months in 2008-2025. San Sebastian was covered most often (9 times since 2008).
How many severe thunderstorm warnings does Puerto Rico get?
Every severe thunderstorm warning that covered part of Puerto Rico. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 0 |
| 2025 | 3 |
| 2024 | 2 |
| 2023 | 0 |
| 2022 | 1 |
| 2021 | 3 |
| 2020 | 4 |
| 2019 | 0 |
| 2018 | 1 |
| 2017 | 1 |
| 2016 | 0 |
| 2015 | 1 |
| 2014 | 2 |
| 2013 | 0 |
| 2012 | 3 |
| 2011 | 16 |
| 2010 | 6 |
| 2009 | 5 |
| 2008 | 2 |
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
When in the year does Puerto Rico get them?
Sum of 2008-2025; the busiest month is labelled.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
Where in Puerto Rico?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| San Sebastian | 9 | 1 | October 5, 2025 |
| Vega Baja | 9 | 2 | August 16, 2025 |
| Guayama | 8 | 1 | June 2, 2024 |
| Patillas | 8 | 1 | June 2, 2024 |
| Anasco | 7 | 1 | October 5, 2025 |
| Arroyo | 7 | 1 | June 2, 2024 |
| Ciales | 7 | 1 | October 5, 2025 |
| Las Marias | 7 | 1 | October 5, 2025 |
| Mayaguez | 7 | 0 | May 12, 2012 |
| Vega Alta | 7 | 2 | August 16, 2025 |
| Yabucoa | 7 | 1 | June 2, 2024 |
| Corozal | 6 | 0 | May 22, 2021 |
The NWS issues these products for counties or forecast zones; a zone can be part of a county or a mountain range.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
What is a severe thunderstorm warning?
A severe thunderstorm warning means a storm is producing, or is about to produce, hail one inch across or larger and/or winds of 58 mph or more. A warning means the hazard is happening, about to happen, or very likely: act now to protect people and property. The national record · Every warning type in Puerto Rico.